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pt.c (reregister_specialization): Use htab_find instead of htab_find_slot with INSERT.

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* pt.c (reregister_specialization): Use htab_find instead of
	htab_find_slot with INSERT.
	(maybe_process_partial_specialization, lookup_template_class_1): Change
	slot variable type to void ** to avoid aliasing problems.
	(register_specialization): Likewise.  Use slot != NULL instead of
	more expensive !optimize_specialization_lookup_p (tmpl) test.

Co-Authored-By: Diego Novillo <dnovillo@google.com>

From-SVN: r179719
This commit is contained in:
Jakub Jelinek 2011-10-09 11:35:23 +02:00 committed by Jakub Jelinek
parent 367f06ae31
commit 68e291ec19
2 changed files with 34 additions and 21 deletions
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10
gcc/cp/ChangeLog
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@ -1,3 +1,13 @@
2011-10-09 Jakub Jelinek <jakub@redhat.com>
Diego Novillo <dnovillo@google.com>
* pt.c (reregister_specialization): Use htab_find instead of
htab_find_slot with INSERT.
(maybe_process_partial_specialization, lookup_template_class_1): Change
slot variable type to void ** to avoid aliasing problems.
(register_specialization): Likewise. Use slot != NULL instead of
more expensive !optimize_specialization_lookup_p (tmpl) test.
2011-10-08 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/34927

45
gcc/cp/pt.c
View File

@ -892,7 +892,8 @@ maybe_process_partial_specialization (tree type)
instantiation. Reassign it to the new member
specialization template. */
spec_entry elt;
spec_entry **slot;
spec_entry *entry;
void **slot;
elt.tmpl = most_general_template (tmpl);
elt.args = CLASSTYPE_TI_ARGS (inst);
@ -903,10 +904,10 @@ maybe_process_partial_specialization (tree type)
elt.tmpl = tmpl;
elt.args = INNERMOST_TEMPLATE_ARGS (elt.args);
slot = (spec_entry **)
htab_find_slot (type_specializations, &elt, INSERT);
*slot = ggc_alloc_spec_entry ();
**slot = elt;
slot = htab_find_slot (type_specializations, &elt, INSERT);
entry = ggc_alloc_spec_entry ();
*entry = elt;
*slot = entry;
}
else if (COMPLETE_OR_OPEN_TYPE_P (inst))
/* But if we've had an implicit instantiation, that's a
@ -1294,7 +1295,7 @@ register_specialization (tree spec, tree tmpl, tree args, bool is_friend,
hashval_t hash)
{
tree fn;
spec_entry **slot = NULL;
void **slot = NULL;
spec_entry elt;
gcc_assert (TREE_CODE (tmpl) == TEMPLATE_DECL && DECL_P (spec));
@ -1327,10 +1328,10 @@ register_specialization (tree spec, tree tmpl, tree args, bool is_friend,
if (hash == 0)
hash = hash_specialization (&elt);
slot = (spec_entry **)
slot =
htab_find_slot_with_hash (decl_specializations, &elt, hash, INSERT);
if (*slot)
fn = (*slot)->spec;
fn = ((spec_entry *) *slot)->spec;
else
fn = NULL_TREE;
}
@ -1423,11 +1424,12 @@ register_specialization (tree spec, tree tmpl, tree args, bool is_friend,
&& !check_specialization_namespace (tmpl))
DECL_CONTEXT (spec) = DECL_CONTEXT (tmpl);
if (!optimize_specialization_lookup_p (tmpl))
if (slot != NULL /* !optimize_specialization_lookup_p (tmpl) */)
{
spec_entry *entry = ggc_alloc_spec_entry ();
gcc_assert (tmpl && args && spec);
*slot = ggc_alloc_spec_entry ();
**slot = elt;
*entry = elt;
*slot = entry;
if (TREE_CODE (spec) == FUNCTION_DECL && DECL_NAMESPACE_SCOPE_P (spec)
&& PRIMARY_TEMPLATE_P (tmpl)
&& DECL_SAVED_TREE (DECL_TEMPLATE_RESULT (tmpl)) == NULL_TREE)
@ -1639,19 +1641,19 @@ iterative_hash_template_arg (tree arg, hashval_t val)
bool
reregister_specialization (tree spec, tree tinfo, tree new_spec)
{
spec_entry **slot;
spec_entry *entry;
spec_entry elt;
elt.tmpl = most_general_template (TI_TEMPLATE (tinfo));
elt.args = TI_ARGS (tinfo);
elt.spec = NULL_TREE;
slot = (spec_entry **) htab_find_slot (decl_specializations, &elt, INSERT);
if (*slot)
entry = (spec_entry *) htab_find (decl_specializations, &elt);
if (entry != NULL)
{
gcc_assert ((*slot)->spec == spec || (*slot)->spec == new_spec);
gcc_assert (entry->spec == spec || entry->spec == new_spec);
gcc_assert (new_spec != NULL_TREE);
(*slot)->spec = new_spec;
entry->spec = new_spec;
return 1;
}
@ -7042,7 +7044,7 @@ lookup_template_class_1 (tree d1, tree arglist, tree in_decl, tree context,
{
tree templ = NULL_TREE, parmlist;
tree t;
spec_entry **slot;
void **slot;
spec_entry *entry;
spec_entry elt;
hashval_t hash;
@ -7480,10 +7482,11 @@ lookup_template_class_1 (tree d1, tree arglist, tree in_decl, tree context,
SET_TYPE_TEMPLATE_INFO (t, build_template_info (found, arglist));
elt.spec = t;
slot = (spec_entry **) htab_find_slot_with_hash (type_specializations,
&elt, hash, INSERT);
*slot = ggc_alloc_spec_entry ();
**slot = elt;
slot = htab_find_slot_with_hash (type_specializations,
&elt, hash, INSERT);
entry = ggc_alloc_spec_entry ();
*entry = elt;
*slot = entry;
/* Note this use of the partial instantiation so we can check it
later in maybe_process_partial_specialization. */